Standing-valve puller



Oct. 5 1926.

J. c. AxELsoN STANDING VALVE FULLER Filed July 25, 1925 3 Sheets-Sheet 1 Oct. 5 1926.

- J. c. AxELsoN STANDING VALVE FULLER 3 Sheets-Sheet 2 Filed July 25, 1925 l l l lv irre/rms?.

Oct. 5 1926.

STANDING VALVE `FULLER Filed July 25, 1925 .'5 Sheets-Sheet 5 :fahr C. 15.46 N,

Patented Get. 5, 1926.

iinn siAriis PATENT oFFIcE.

JULIE C. AXELSON, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO AXELSON MACHINE COMPANY, A CORPORATION OF CALIFORN'IA.

STANDING-VALVE PULLER.

Application filed July 25, 1925.

My invention relates to oil well pumps and particularly to a device for lifting a standing valve of the pump with the plunger thereof.

For pumping oil from wells it is common practice to secure a pump barrel to the lower end of a pump tubing near the bottom of the well. This tubing extends upwardly through the well to the surface of the ground. A pump plunger is free to move vertically in the barrel and a sucker rod string extending through the pump tubing is attached tothe upper part of the plunger. The upper end of the sucker rod string is attached to a walking beam situated in a derriclr, this beam oscillating in order to reciprocate the plunger in the bar rel. The plunger carries a working valve and the barrel carries a. standing valve. t is advantageous to have the standing valve removable from the barrel with the plunger for the purpose of inspection and repair, land also for draining the pump barrel and tubing. Gtherwise it is'necessary to conduct a separate fishing job to remove the standing valve. y

It is an object of my invention to provide a pump having a device for removing the standing valve from the barrel with the plunger.

It is very desirable to have the working valve as near the standing valve as possible7 since the efliciency of a pump is found to be greater' in most instances when the valves are close to eachother at the end of the down stroke of the plunger.

It is a further object of my invention to provide in an oil well pump a device for removing the standing valve with the plunger, which device allows the standing valve and working valve to besituated close together. Y

lt is another object of my invention to provide a pump of this character in which the plunger` and the standing valvey are disengaged during the normal operation of the pump but are readily engaged by a relative partial rotation.

lt is also an object of my invention to provide a -device for removing the standing valve with the plunger, having resilient means for preventing accidental disconiieotioln between the plunger and the standing va ve; v

Serial No. 46,020.

Other objects and advantages of my inventionwill be made evident hereinafter.

Referring to the three sheets of drawings in which l illustrate alternative forms of my invention, Y

F ig. l is a fragmentarysectional view of the lower end of an oil well pump in which my invention is utilized.

Fig, is a perspective view of the lifter of my invention.

Fig. 3 isa perspective view of the body of my linvention. Y

Fig: 4 is a view showing the lifter and body in semi-engaged position, a cross bar ofthe lifter being extended into a central diametral channel of the body.

Fig. 5l is a view showing tlie'lifter and body in complete engaged position.

Fig. 6 is a section taken on the line 6 6 of Fig. 5.

' Fig. 7 is an elevational view taken as indicated by the arrow 7 of Fig. 5.

Fig. 8 is a fragmentary detail showing the manner in which resilient arms are sprung to allow the cross bar of the lifter to move into the hooks of the body.

Fig. is a partially sectioned view of an alternative form oflifter of my invention.

Fig. 10 is an elevational view showing an alternative form of body which is used with the form of lifter shown in Fig. 9.

Fig. l1 is a plan view of the body shown in Fig. 10.

Fig. 12 is a view of the lifter shown in Fig. 9, this view being vtaken as Vindicated by the arrow l2 of Fig. 9.

Fig. 13 is a bottom plan view of Fig. l2.

Fig. le is an elevational view of the body shown in Figs. 10 and l1, this viewV being taken as indicated by the arrow 14 of Fig. l1.

lVith reference to Fig. l, 2O indicates a pump barrel and 2l indicates a pump plunger. The barrel 2O includes a shell 22 having a .lower collar'23 threadably secured at the lower end thereof. Carried inside the shell `22 are liners 24.-y which are accurately ground and aligned inside the shell 22 to receive the plunger 2-1. A working valve in the form of a ball 29 rests on a conical seat 30 of the bushing 27 which is secured in the lower end of a plunger Vsleeve 28. A standing valve cage 32 has a conical portion 83 which is'adapted to seat in a conical seat 34 provided by the lower collar 23. standing valve 36 rests on a seat 37 and is arranged to close a passage 38 formed through the standing valve cage 32.

In Figs. 1 to 3 inclusive, I show av lifter 40 of my invention secured to the lower end of the plunger 21 and a body 41 of my invention secured to the standing valve cage 32. wish it to be understood, however, that under some conditions it is desirable to reverse the parts, that is, to secure the body 41 to the plunger 21 and the lifter 49 to the standing valve cage 32. Such a reversal of parts would not deviate from the spirit of my invention.

The lifter 40 has a head 43 which is t-ernally threaded at 44. The bushing 27 has an external threaded projection 45 on which the threaded portion 44 of the head 43 is placed. The head 43 has an internal chamber 47 which joins to the exterior of the head by passages 43. Extending downwardly from a lower wall 49 of the head 43 are depending legs 50. rEhe depending llegs 50 are diametrically opposite and have inner flat faces 51. Extending between the lower ends of the depending legs 50 is a diametrically extending cross bar 53 which has a semi-cylindrical upper face 54.

The body 41 of my invention has a lower threaded projection 57 which is threaded into an internally threaded portion 58 provided at the upper part of the standing valve cage 32. The upper part of the body 41 is provided in the form of a pair of opposite hooks 59 which are separated by a diametral channel 60. The hooks 59 have rigid arms 63 which lextend from a base portion 64 of the body 41. The rigid arms 63 have semicylindrical outer faces 65 and flat inner faces 66 which define the channel 69. The rigid arms 63 have iat'radial faces 63 which are curved at 67 near the lower parts thereof. Extending from the upper ends of the rigid arms 63 are bridges 70, and extending downwardly from the outer parts of the bridges 70 are resilient arms 71. The inner faces of the bridges and resilient arms 70 and 71 form a part of the fiat inner faces 66 of the rigid arms 63. rlf'he outer faces of the bridges and resilient arms 70 and 71 are semi-cylindrical, as indicated at 73. The semi-cylindrical faces 73 are formed on a smaller radius than the semi-cylindrical faces 65. This is clearly shown Vin Figs. 3, 4 and 6. Slots 75 are formed between the rigid and resilient arms 63 and 71 below the bridges 70, the upper ends of these slots eing semi-cylindrical at 76. Enlargements 77 formed at the lower ends of the resilient arms 71 extend into the slot-s7 5, as clearly shown in Figs. 5 and 8, vin order to constrict the lower ends of these slots 75.

During the normal operation of the pump, the lifter 40 and body 41 are disengaged and may rest in the'positions shown in Fig. 1. When the plunger 21 is to be removed to the surface of the ground and the standing valve cage 32 is to be removed therewith, the lifter 40 is lowered into the position shown in Fig. 4. The cross bar 53 and the legs 50 are moved downwardly through the central diametral channel ofr the body 41 until the cross bar 53 reaches the lower end thereof. The lifter 40 is then partially rotated relative to the body 41 and at the saine time it is raised relative thereto. The cross bar 53 folows the contour of the curved portions 67 of the faces 68 provided by the rigid arms 63. The lifter is then elevated so that the cross bar 53 rests as shown in Fig. 5 in the upper parts of the slots 75 provided by the opposite hooks 59, the semicylindrical faces 54 engaging the upper faces 76 of the hooks 59. As clearly shown in Figs. 6 and 7 the flat inner facesl of the legs 50 engage the semi-cylindrical outer faces 73 of the bridges and resilient arms 7 9 and 71. The outer faces of the legs 50 are of substantially the same diameter and the lower ends of the legs 50 restin the spaces provid-ed by the difference in diameters of the faces 73 of the bridges and resilient arms and 71 and outer faces 65 of the rigid arms 63. When the lifter 40 and body 41 are thus arranged, the standing valve cage 32 is attached to the lower end of the plunger 21 and may be elevated therewith to the surface of the grotmd.

The cross bar 53 is locked in the hooks 59 by the enlargements 77 formed on the lower ends of the resilient arms 71. As clearly shown in Fig. 3, as the cross bar 53 passes into the lower ends of the slots 75 of the hooks 59, the enlargements 77 are engaged by the cross bar 53 and the resilient arms 71 are swung from normal position, as indicated by dotted lines 30 in Fig. 3, into the position shown by full lines in this iigure, thus the cross bar is permitted to enter the slots 75. After the cross bar passes theA enlargements 77, the resilient arms 71 return to normal position and the cross bar is loclred in the slots 75 and will not be accidentally removed therefrom.

ln Figs. 9 to 14, inclusive, l show an alternative embodiment of my invention. ln these figures l show a lifter having a head 91 which is threadably secured at 92 to a working valve bushing 93 of a pump plunger. .sin internal chamber 94 ofV the head 91 connects to the exterior thereof by means of passages 95. Extending downwardly from a lower radial wall 96 of the head 91 is a concentric stem 97, from the lower end of which there extends a radial cross bar 98. In Figs. 10, 11 and 14 I show a body 100 which is threaded at 101 into the upper end ofa standing valve cage 102. The body 100 has oppositely arranged hooks 103 which have semi-cylindrical outer faces 104 and semi-cylindrical inner faces 105, these inner faces 105 providing a cylindrical opening 106. The hooks 103 are separated by a diametral channel 107. The lioolrs 103 comprise rigid arms 109, from the upper ends of which there extend bridges 110. Extending downwardly from the outer ends of the bridges 110 are resilient arms 111 having enlargements 112 formed at the lower end thereof which constrict the lower ends of slots 11o of the hooks 103. In connecting the standing valve cage 102 to the plunger, the lifter 90 is lowered so that the stein 97 moves into the cyliiidrical opening 106 of the body 100 and the cross bar 98. moves into the channel 107. lWhen' the cross bar 98 reaches'the lower end of the channel 107, the lifter 90 is rotated relative to the body 100 and is also raised slightly relative thereto so that the cross bar 98 will move along diagonal faces 1111 of the hooks 103 and be guided into the slots 113. As the cross bar 98 inevesinto the slots 118, the enlargements 112 are engaged and the resilient arms 111 are sprung outwardly, and when the enlargements 112 are disengaged, they return to normal position the same as in the first described einbodinient of my invention.V The cross bar 98 moves into the upper ends of the slots 113 as indicated by dotted lines 116 of Fig. 14C, and the standing valve cage 102 may be elevated to the surface of the ground with the plunger of the pump.

From the foregoing description it is obvious that the lifter and body of my iiivention are quite simple and stable in construction and mav be very readily attached to a standard oil well pump. The parts in no way interfere with the operation ofla pump and permit the standing and working valves to be placed close together, which is quite an advantage. The lifter and body are protected against disconnection by the resilient arms and the enlargements of iny invention, as set forth in the description. The decided advantage of having a device of this character, for removing the standing valve cage with thek plunger, is very obvious as it makes it possible to lift the standing valve cage with the plunger, thus eliminating an extra shing operation.

I claim? as my invention:

1. A pump comprising: a barrel; a plunger element adapted to reciprocate therein; a working valve carried by said plunger; a standingvalve cage element seated in said iarrel below said plunger; a standing valve in said standing valve cage; a body secured to one of said elements, said body having a central channel and hooks disposed to each side of said central channel, said hooks having rigid arms and resilient arms which have enlargements at the ends thereof; and a lifter secured to the other of said elements, said lifter having an engager, said engager being adapted for extension into said hooks through said central channel in'order to connect said standing valve cage to said plunger, said engager springing said resilient arms outwardly when passing into said lioolis and being protected against accidental disconnection by said enlargements.

2. A pump comprising :1y a barrel 5a plunger element adapted to reciprocate therein; a working valve carried by said plunger; a standing valve cage element seatediii said barrel b'elowsaid plunger; a standing valve in said standing valve cage; a body secured to one of said elements, said body having a central channel and hooks disposed to each side of said central channel, said hooks having rigid arms and resilient arms which have enlargements at the ends thereof; and a lifter secured to the other of said elements, said lifter having an engager, said engager being adapted for extension into said central channel by relative axial movement and thereafter into said hooks by relative rota` tional and axial movement in order to connect said standing valve cage to said plunger,

said engager springing said resilient arms outwardly when passing into lsaid hooks and being protected against accidentaldisconf nection by said enlargements.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 14th day of July, 1925.

JULE C. AXELSON. 

